I can't provide a direct download link for the **New Holland 750HD, 770HD Disc Auger Header Service Manual**. However, you can find the manual through the following methods:
1. **New Holland Official Website**: Visit New Holland's support section and search for the service manual. You may need to create an account to access the manual.
2. **Authorized New Holland Dealers**: Contact a local New Holland dealer. They can help you obtain the manual directly.
3. **Third-Party Websites**: Websites such as ManualsLib, Manualslib.com, or other manual vendors often have the service manuals available for purchase or download.
4. **Online Marketplaces**: Sometimes sellers on platforms like eBay offer downloadable service manuals for specific machinery.
Feel free to ask if you need further assistance!
